PRINCETON TOWNSHIP — A 50-year-old California man accused of sexually assaulting a 9-year-old township girl has been indicted by a Mercer County grand jury.

John Monaghan of San Francisco was indicted on charges of aggravated sexual assault, sexual assault and child endangerment for the October 2 incident that allegedly took place in the girl’s home.

According to prosecutors, Monaghan was in New Jersey visiting the child’s family when he assaulted her.

Her father reported the alleged incident to police. Monaghan, who had returned to California, was arraigned there. He is free on $150,000 bail and will return to New Jersey when his case is heard in Mercer County Superior Court, a spokeswoman for the prosecutor’s office said.